Wireless base station, control device, and control method

Abstract

A wireless base station includes an interference-sensing means for sensing the occurrence of interference at the wireless base station, an interference analysis means for executing analysis that is based on the result of sensing by the interference-sensing means and that includes estimation as to the continuity of the interference, and a wireless resource control means for executing wireless resource control for reducing the effect of the interference in accordance with the result of analysis by the interference analysis means. The continuity includes temporal continuity and/or spatial continuity.

What is claimed is: 
     
         1 . A wireless base station comprising:
 at least one memory configured to store instructions; and at least one processor configured to execute the instructions to   detect occurrence of interference at the wireless base station,   execute interference analysis that is based on a result of detection by the at least one processor and includes estimation of consecutiveness of the interference, and   execute, according to a result of the analysis by the at least one processor, wireless resource control for reducing influence of the interference, wherein   the consecutiveness includes at least one of temporal consecutiveness and spatial consecutiveness.   
     
     
         2 . The wireless base station according to  claim 1 , wherein
 the analysis by the at least one processor is prediction based on a result of estimation of the consecutiveness, and includes prediction of whether execution of the wireless resource control is necessary, and,   when it is predicted that execution of the wireless resource control is necessary, the at least one processor executes the wireless resource control.   
     
     
         3 . The wireless base station according to  claim 1 , wherein
 the at least one processor estimates the consecutiveness for each predetermined unit, and   the predetermined unit is constituted of at least one of a frequency resource and a TDD slot number.   
     
     
         4 . The wireless base station according to  claim 1 , wherein
 the at least one processor estimates at least one of the spatial consecutiveness, and the temporal consecutiveness.   
     
     
         5 . The wireless base station according to  claim 4 , wherein
 the at least one processor estimates the spatial consecutiveness by executing interpolation and extrapolation processing based on a kriging method.   
     
     
         6 . The wireless base station according to  claim 4 , wherein
 the at least one processor estimates a position and a direction of an interference source, based on beam information associated with each interference detection spot, and estimates the spatial consecutiveness, based on the position and the direction of the interference source.   
     
     
         7 . The wireless base station according to  claim 1 , wherein
 the wireless resource control includes load distribution control among the wireless base stations.   
     
     
         8 . The wireless base station according to  claim 7 , wherein
 the load distribution control includes at least one of control of executing handover, control of executing carrier aggregation, control of executing dual connectivity, and control of allocating a network slice.   
     
     
         9 . The wireless base station according to  claim 7 , wherein
 the at least one processor, based on a result of the interference analysis, updates accommodation information indicating an accommodable terminal number or an accommodable traffic volume in the wireless base station, and   the at least one processor uses the accommodation information for the load distribution control.   
     
     
         10 . The wireless base station according to  claim 7 , wherein further comprising:
 the at least one processor predicts movement of a wireless terminal in a wireless communication system, wherein   the at least one processor executes the load distribution control based on a result of prediction of movement of the wireless terminal.   
     
     
         11 . The wireless base station according to  claim 1 , wherein
 the at least one processor extracts a feature value based on a reception level of a received signal at a base station antenna of the wireless base station and detects occurrence of the interference by using the feature value, and   a statistical value of the reception level in a fixed period is used as the feature value.   
     
     
         12 . The wireless base station according to  claim 1 , wherein
 the at least one processor extracts a feature value based on a reception level of a received signal at a base station antenna of the wireless base station and detects occurrence of the interference by using the feature value, and   the reception level of a reference signal transmitted by an adjacent other wireless base station is used as the feature value.   
     
     
         13 . The wireless base station according to  claim 1 , wherein
 the at least one processor estimates a position of other wireless terminals in a wireless communication system, wherein   the at least one processor extracts a feature value based on the position of the other wireless terminals and a reception level of a received signal at the other wireless terminals, and detects occurrence of the interference by using the feature value.   
     
     
         14 . The wireless base station according to  claim 1 , wherein
 the wireless base station includes a radio wave sensor, and   the at least one processor extracts a feature value based on a reception level of a received signal at the radio wave sensor, and detects occurrence of the interference by using the feature value.   
     
     
         15 . The wireless base station according to  claim 11 , wherein
 the at least one processor inputs the feature value to a trained model and thereby detects occurrence of the interference, and   the trained model is generated by machine learning using the feature value in a past.   
     
     
         16 . The wireless base station according to  claim 11 , wherein
 the at least one processor determines presence or absence of the interference for each TDD slot number.   
     
     
         17 . The wireless base station according to  claim 11 , wherein
 the at least one processor determines presence or absence of the interference for each beam in beam control using a plurality of antenna elements.   
     
     
         18 . The wireless base station according to further comprising:  claim 1 , wherein
 the at least one processor executes control of outputting information indicating a result of the interference analysis and information indicating a content of the wireless resource control that is to be executed or has been executed by the at least one processor.   
     
     
         19 - 20 . (canceled) 
     
     
         21 . A control device for a wireless base station comprising:
 at least one memory configured to store instructions; and at least one processor configured to execute the instructions to   detect occurrence of interference in the wireless communication system,   execute interference analysis that is based on a result of detection by the interference detection means and includes estimation of consecutiveness of the interference, and   execute, according to a result of the interference analysis by the at least one processor, wireless resource control for reducing influence of the interference, wherein   the consecutiveness includes at least one of temporal consecutiveness and spatial consecutiveness.   
     
     
         22 . A control method for a wireless base station comprising:
 detecting, by at least one memory configured to store instructions; and at least one processor configured to execute the instructions to, occurrence of interference at the wireless base station;   executing, by the at least one processor, interference analysis that is based on a result of detection by the at least one processor and includes estimation of consecutiveness of the interference; and   executing, by the at least one processor, according to a result of analysis by the at least one processor, wireless resource control for reducing influence of the interference, wherein   the consecutiveness includes at least one of temporal consecutiveness and spatial consecutiveness.   
     
     
         23 - 25 . (canceled)